package com.kuang.config;

import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;


//AOP : 拦截器
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    //授权
    @Override
    protected void configure(HttpSecurity http) throws Exception {
        //首页所有人可以访问，功能页只有对应有权限的人才能访问
        //请求授权的规则

        http.authorizeRequests()
                .antMatchers("/level1/**").hasRole("vip1")
                .antMatchers("/level2/**").hasRole("vip2")
                .antMatchers("/level3/**").hasRole("vip3");

        //没有权限默认会到登录页面,需要开启登录的页面
             // /login
             //定制登陆页 LoginPage("/toLogin")
        http.formLogin().loginPage("/toLogin").usernameParameter("user").passwordParameter("pwd").loginProcessingUrl("/login");


        //注销，开启了注销功能，跳到首页

        //防止网站攻击： get, post
        http.csrf().disable(); //关闭csrf功能，登陆失败可能的原因
        http.logout().logoutSuccessUrl("/");

        //开启记住我功能 cookie
        http.rememberMe().rememberMeParameter("remeber");
    }

    //认证, springboot 2.1.x 可以直接使用
    //密码编码： PasswordEncoder
    //在Spring Security 5.0+ 新增了很多加密方式~
    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {

        //这些数据正常应该从数据库中读
        auth.inMemoryAuthentication().passwordEncoder(new BCryptPasswordEncoder())
                .withUser("kuangshen").password(new BCryptPasswordEncoder().encode("123456")).roles("vip2","vip3")
                .and()
                .withUser("root").password(new BCryptPasswordEncoder().encode("123456")).roles("vip1","vip2","vip3")
                .and()
                .withUser("guest").password(new BCryptPasswordEncoder().encode("123456")).roles("vip1");
    }
}
